Oil-cup



(No Model.)

W. H. WILKINSON.

- OIL OUR. No. 4335972. Patented Aug; 12, 1890.

UNITED STATES PATENT OFFICE.

-\VILLIAM1I. \VILKINSON, OF BOSTON, MASSACHUSETTS.

OIL-CUP.

SPECIFICATION forming part of Letters Patent No. 433,972, dated August 12, 1890.

Application file -d May 23, 1890. Serial No. 352,834. (No model.)

4 To all whom it may concern/.

and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to figures of reference marked thereon, which form a part of this specification.

This invention relates to improvements in oil-cups.

The object of my invention is tov produce such a cup that the oil feed or drip can be regulated, increased, or diminished at pleasure, while at the same time any desired feed once. determined upon can be positively obtained again and at a moments notice, even although occasion might require theoil-su p ply to be stopped entirely.

This invention, briefly described, consists, in connection with the valve-rod, of an adjustable clamp-yoke exterior-1y of the cup. The valve is raised or lowered by a screwthread thereupon, whichengages in the cap of the oil-cup. The valve is adjusted to deliver a suitable supply of oil, and then the yoke is fastened firmly to it, care being taken that said yoke shall rest against a stop formed on the cap. This stop prevents the valve'being opened to permit any greater flow of lubricant than what has been determined upon, while the yoke and rod can be turned-reversely until the valve is seated and the oilfeed completely stopped.

The drawings represent, in Figure 1, a sectional elevation of an oil-cup embodying my Fig. 2 is a plan of the same.

The oil-cup in the present instance belongs to that class termed open-sight feed, and is constructed as usual, being composed of the several principal parts-viz., a circular base or casting 2 with a pendent stem or support 3, having a transverse aperture 4, through which can be viewed the lower extremity of the oil-feed pipe.

central hollow tube 5, cast integrally with the base of the oil-cup and open at both ends,w hich are screw-threaded, the lower one interiorly This latter is formed by a to engage a removable nipple centrally bored and upon which the valve is seated, and the upper one exteriorly screw-threaded to unite it with the cap 6. A hole 7 in the post 5 permits the contents of the cup to escape into the nipple and thence to the surface to be lubricated. The cap 6 is likewise a circular casting, and is provided with a central aperture 8, interiorly screw-threaded. Said screwthread engages the upper end of the central feed-tube 5, and serves when screwed into place to hold a glass cylinder 9, the ends of which are closed by said cap and base. With in the feed-pipe 5 is placed the valve-rod 10 and valve, spring-actuated, which is seated below the aperture 7 and upon the nipple, while the upper end of said rod is fitted with a head 12, the lower portion of which is screwthreaded to engage the thread cut in the cap. Thus by turning the hub in'the cap the valve is raised from or lowered upon its seat to regulate the flow of oil. The tension of the spring against the head of the valve-rod holds the latter in any. desired position, even when located upon the moving partsof an engine or other machine. The upper surface of the cap is formed with a depression or recess 13, while the filling-orifice is shown at 14. Thus in filling should any oil overflow it is received temporarily in said recess and delivered within the oil-cup through the hole 15, while an aperture 16 permits air to escape. The principtl duty which this recess performs is to create an abutment-17, the latter serving as a stop to the rotation of the valve in the act of opening. This is effected by a movable yoke 18. The latter'is provided with a projecting lug or finger 19, which extends into the recess and contacts against the abutment 17, the several parts operating as follows:

Presuming that a certain desired feed of oil is to be delivered upon a bearing, the oil-cup is positioned by bringing the finger 19 against the face of the stop, when the yoke is firmly affixed upon the head of said valve-rod and the oil-cup is ready for use. The valve-rod and yoke are free to turn until the valve is closed; but the amount of rotation to open the valve is limited by the position of the yoke and its time of contact with the stop 17. Thus the oil-feed can be stopped at any time, While the oil-feed determined upon can be obtained at any time by causing the yoke and engagement of its rod with the cap, a removable yoke secured adj ustably to the projecting end of the valve-rod, and a stop on said cap, with which said yoke co-operates, substantially as and for purposes herein described.

3. A lubricator composed as follows: a base, an oil-reservoir, and a cap, a valve-rod vertically adjustable by screw engagement with said cap, an exterior recess 13, the oil-duct 15, air-outlet 16, the abutment 17, adjustable clamp-yoke upon the Valve-rod, and the finger 19, which operates to limit the rotary movement of the valve to determine the oilsupply, substantially as hereinbefore stated.

In testimony whereof I affiX my signature in presence of two witnesses.

WM, 11. WVILKINSON.

Witnesses:

H. E. LODGE, FRANCIS O. STANWOOD. 

